Simulink: Finding the block or function where "not enough input arguments" are missing

For my thesis I got a already existing programm which I have to modify. To give you a short overview The programm gets an input from a thermal camera and a normal camera and should measure a tempreature by differen calculations.

My problem is, when I simulate the code in Simulink I get an error with "not enough input arguments". I'm just experienced in Matlab, but not in Simulink. The error doesn't tell me which exact block or function is missing the input arguments. Do you have an idea how I can test it or get an more exact error.

Thank you

[madhan ravi]

See the error message in https://www.mathworks.com/help/simulink/ug/diagnose-simulation-errors.html

[Maximilian Hillen]

Thank for your answer. Maybe I have to explain myself a bit better.

My model is called total. The error occures in the model "total". The input is from two cameras and in the end I want to see one image which is shown in a video viewer. Inbetween there are different submodels which make calculations etc. When I run the simulation the error "not enough unput arguments" occures in "total". But the problems shouldn't be the input from the cameras, because I testet just the input of the cameras in a video viewer by commenting out everything in between. So every camera works for his own well. The whole model "total" doesnt. Can I get anyhow more exact informations where the input is missing?

Thanks!